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ame, inc. 1 AME8750 low-dropout 150ma / 150ma dual cmos regulator l very low dropout voltage l guaranteed 150ma / 150ma each output l accurate to within 1.5% for both outputs l typical 70 m a quiescent current l over-temperature shutdown l current limiting l short circuit current fold-back l noise reduction bypass cap l power-saving shutdwon mode l all ame's lead free product meet rohs standards the AME8750 dual, low dropout, linear regulators op- erate from higher v out +v dropout to 5.5v input and deliver up to 150ma / 150ma output current each. it has a by- pass pin option allows users to decouple the bandgap reference for reducing the output noise. low dropout voltage and low quiescent current(70 m a typ.)make them ideal for battery applications. the AME8750 is available with a wide variety of voltage options as standard and can be trimmed to 1.5% accu- racy. for protection purpose, AME8750 has both thermal shutdown and current fold-back to prevent device failure under the ? worst ? of operating conditions. l cellular phones l palm / notebook l battery power equipment l handheld instruments n general description n features n applications n functional block diagram n typical applications fixed version v out1 v out2 en1 error amp1 v in gnd en2 on/off control vr1 each circuit on/off control vr2 each circuit voltage reference error amp2 current limit current limit r11 r12 r21 r22 AME8750a v out1 v in 1 m f gnd v out1 v out2 byp 10n f v in 1 m f en 1 m f v out2 AME8750b v out1 v in 1 m f gnd v out1 v out2 v in 1 m f en2 en1 1 m f v out2
ame, inc. 2 low-dropout 150ma / 150ma dual cmos regulator AME8750 n pin configuration ame 8750aeey 1. v out2 2. gnd 3. byp 4. en 5. v in 6. v out1 * die attach: conductive epoxy sot-26 top view sot-26 top view ame 8750beey 1. v out2 2. gnd 3. en1 4. en2 5. v in 6. v out1 * die attach: conductive epoxy 1 3 2 6 4 5 AME8750 1 3 2 6 4 5 AME8750 n pin description AME8750a AME8750b 1 1 v out2 regulator 2 output. sources up to 150ma continuous current. bypass with a 1 m f (< 0.5 w typ esr) capacitor to gnd. 2 2 gnd ground. this pin also functions as heatsink. solder to a large pad or the circuit-board ground plane to maximize thermal dissipation. 3 n/a byp reference noise bypass. bypass with a low leakage 10nf ceramic capacitor for reduced nise at both outputs. n/a 3 en1 shutdown 1 input. a logic low shuts down regulator 1. if en1 and en2 are both low, both regulators and the reference turn off. if either en1 and en2 is a logic high, the reference is on. connect to v in for normal operation. 4 n/a en shutdown input. a logic low shuts down both regulators. connect to v in for normal operation. n/a 4 en2 shutdown 2 input. a logic low shuts down regulator 2. if en1 and en2 are both low, both regulators and the reference turn off. if either en1 and en2 is a logic high, the reference is on. connect to v in for normal operation. 5 5 v in regulator input. supply voltage can range from higher v out +v dropout to 5.5v. this input also supplies the on- chip reference. bypass with 1 m f to gnd. 6 6 v out1 regulator 1 output. sources up to 150ma continuous current. bypass with a 1 m f (< 0.5 w typ esr) capacitor to gnd. pin number pin name description
ame, inc. 3 AME8750 low-dropout 150ma / 150ma dual cmos regulator operating ambient temperature range number of pins package type pin configuration special feature AME8750 x x x x xxxx x output voltage n ordering information (contd.) a 1. v out2 e: -40 o c to +85 o c e: sot-2x y: 6 1825: v out1 =1.8v y: lead free & low profile (sot-26) 2. gnd v out2 =2.5v z: lead free 3. byp 4. en 1828: v out1 =1.8v 5. v in v out2 =2.8v 6. v out1 b 1. v out2 (sot-26) 2. gnd 3. en2 4. en1 5. v in 6. v out1 special feature pin configuration operating ambient temperature range output voltage (both ldos) package type number of pins
ame, inc. 4 low-dropout 150ma / 150ma dual cmos regulator AME8750 n ordering information note:ww represents date code and pls refer to date code rule before package dimension. * a line on top of the first letter represents lead free plating such as bckww. please consult ame sales office or authorized rep./distributor for voltage accuracy and package type availability. part number marking* output voltage package operating ambient temperature range AME8750aeey1828z bckww v out1 =1.8v v out2 =2.8v sot-26 - 40 o c to + 85 o c AME8750aeey1828y bckww v out1 =1.8v v out2 =2.8v tsot-26 - 40 o c to + 85 o c AME8750beey1828z bcjww v out1 =1.8v v out2 =2.8v sot-26 - 40 o c to + 85 o c AME8750beey1828y bcjww v out1 =1.8v v out2 =2.8v tsot-26 - 40 o c to + 85 o c AME8750beey1825z bbhww v out1 =1.8v v out2 =2.5v sot-26 - 40 o c to + 85 o c AME8750beey1825y bbhww v out1 =1.8v v out2 =2.5v tsot-26 - 40 o c to + 85 o c
ame, inc. 5 AME8750 low-dropout 150ma / 150ma dual cmos regulator parameter symbol rating unit ambient temperature range t a -40 to +85 o c junction temperature range t j -40 to +125 o c n absolute maximum ratings n recommended operating conditions n thermal information caution: stress above the listed absolute maximum rating may cause permanent damage to the device. * hbm b: 2000v~3999v * measure q jc on center of molding compound if ic has no tab. ** mil-std-202g 210f parameter package die attach symbol maximum unit internal power dissipation p d 400 mw 150 o c 350 o c solder iron (10 sec)** q jc q ja o c / w maximum junction temperature conductive epoxy 81 260 thermal resistance* (junction to case) thermal resistance (junction to ambient) sot-26 parameter maximum unit input voltage 6 v output current p d /2v in -(v out1 +v out2 ) ma output voltage gnd-0.3 to v in +0.3 v esd classification b*
ame, inc. 6 low-dropout 150ma / 150ma dual cmos regulator AME8750 parameter symbol min typ max units i nput supply voltage v in n ote1 5.5 v q uiescent current i q 70 160 m a - 1.5 1.5 t j =25 o c - 0.2 0.2 t j =-40 o c to +125 o c - 0. 2 5 0.25 load r egulation reg load 1 ma= 2.5v m a v in =5.0v, en1=en2=0v psrr 0ma ame, inc. 7 AME8750 low-dropout 150ma / 150ma dual cmos regulator n detailed description the AME8750 is low-dropout, low quiescent-current lin- ear regulatior designed primarily for battery-powered appli- cations. these parts are available with preset output volt- age ranging from 1.8v to 3.3v, and the parts can supply loads up 150ma. the AME8750a/AME8750b feature two 1 w p-channel mosfet pass transistors. a p-channel moseft provides several advantages over similar designs using pnp pass transistors, including longer battery life. it requires no base drive, which reduces quiescent current significantly. the AME8750a/AME8750b only consume 70 m a of quiescent current whether in dropout, light-load, or heavy-load appli- cations. the AME8750a/8750b contain two independent current limiters, one for each regulator, which monitor and control the pass transistor ? s gate voltage, limiting the guaranteed maximum output current to 150ma minimum. the output can be shorted to ground for an indefinite time without dam- aging the part. use a 1 m f capacitor on the AME8750a/ AME8750b input and a 1 m f capacitor on the outputs. larger input capacitor values and lower esrs provide better supplynoise rejection and line transient response. thermal -overload protection limits toatl power dissipa- tion in the AME8750a/AME8750b. when the junction trmperature exceeds t j =150 o c, the themal sensor signals the shutdown logic, turning off the pass transistor and al- lowing the ic to cool. AME8750a the AME8750a has a single shutdown control input(en). drive en low to shut down both outputs, reducing supply current to 0.3 m a. connect en to a logic-high, or in, for nor- mal operation. AME8750b the AME8750b has independent shutdown control in- puts (en1 and en2). drive en1 low to shutdown v out1 . drive en2 low to shut down v out2 . drive both en1 and en2 low to shut down the entire chip, reducing supply current to 0.3ma. connect both en1 and en2 to a logic-high, or in, for nor- mal operation. internal p-channel pass transistor shutdown current limit thermal-overload protection n application information capacitor selection and regulator stability psrr and operation from sources other than batteries the AME8750a/AME8750b are designed to deliver low dopout voltages and low quiescent currents in batterypowered systems. power-supply rejection is 54db at low frequencies. (see the psrr vs. frequency graph)
ame, inc. 8 low-dropout 150ma / 150ma dual cmos regulator AME8750 quiescent current vs input voltage supply current vs. load current quiescent current vs temperature dropout voltage vs load current dropout voltage vs output voltage output voltage vs temperature 0 20 40 60 80 100 120 140 160 0 10 20 30 40 50 60 70 80 90 s u p p l y c u r r e n t ( m a ) both output loaded load current (ma) input voltage (v) 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 20 40 60 80 100 120 140 0 -45 o c -5 o c 25 o c 55 o c o c 125 85 o c q u i e s c e n t c u r r e n t ( u a ) q u i e s c e n t c u r r e n t @ 5 v ( m a ) 50 60 70 80 90 100 110 -50 0 50 100 temperature ( o c) 0 50 100 150 200 250 0 50 100 150 load current (ma) d r o p o u t v o l t a g e ( m v ) -45 j -5 j 25 j 125 j 55 j 85 j v out =2.5v 300 1.77 1.78 1.79 1.80 1.81 1.82 o u t p u t v o l t a g e ( v ) -50 0 50 100 temperature ( o c) v out =1.8v 0 50 100 150 200 250 300 350 1.5 2 2.5 3 3.5 output voltage (v) d r o p o u t v o l t a g e @ 1 5 0 m a ( m v )
ame, inc. 9 AME8750 low-dropout 150ma / 150ma dual cmos regulator psrr vs. frequency channel-to-channel isolation vs frequency line transient load transient load transient near dropout 10 40 0 10 100 1000 10000 1000000 frequency (hz) p s r r ( d b ) 100000 20 30 50 60 bypass no-bypass v in =2.9v v out =1.8v i load =50ma c h a n n e l - t o - c h a n n e l i s o l a t i o n ( d b ) frequency (khz) 10 100 0.01 0.1 1 10 100 1 v in =5v r load =50 w v o u t v i n 4 . 5 v 2 0 m v / d i v ( a c - c o u p l e d ) 3 . 5 v 1 v / d i v 50 m s/div v o u t i l o a d 2 0 m v / d i v ( a c - c o u p l e d ) 1 0 0 m a / d i v 10 m s/div v in =4.3v i load = 0 to 150ma 0 v in =v out +0.1v 1 0 0 m a / d i v v o u t i l o a d 2 0 m v / d i v ( a c - c o u p l e d ) 10 m s/ div 0 output noise spectral density 0.1 1 10 1 10 100 frequency(khz) n o i s e ( m v / ?? h z ) c bp =0.01 m f i out =1,50,100,150ma c bp =0 m f i out =1,50,100,150ma
ame, inc. 10 low-dropout 150ma / 150ma dual cmos regulator AME8750 shutdown response o u t p u t v o l t a g e ( 1 v / d i v ) s h u t d o w n v o l t a g e ( 1 v / d i v ) 0 r load =100 [ 0
ame, inc. 11 AME8750 low-dropout 150ma / 150ma dual cmos regulator n date code rule year a a a w w xxx0 a a a w w xxx1 a a a w w xxx2 a a a w w xxx3 a a a w w xxx4 a a a w w xxx5 a a a w w xxx6 a a a w w xxx7 a a a w w xxx8 a a a w w xxx9 marking date code n tape & reel dimension package carrier width (w) pitch (p) part per full reel reel size sot-26 8.00.1 mm 4.00.1 mm 3000pcs 1801 mm carrier tape, number of components per reel and reel size sot-26 pin 1 w p ame ame
ame, inc. 12 low-dropout 150ma / 150ma dual cmos regulator AME8750 n tape & reel dimension package carrier width (w) pitch (p) part per full reel reel size tsot-26 8.00.1 mm 4.00.1 mm 3000pcs 1801 mm carrier tape, number of components per reel and reel size tsot-26 pin 1 w p ame ame
ame, inc. 13 AME8750 low-dropout 150ma / 150ma dual cmos regulator n package dimension tsot-26 min max min max a+a 1 0.90 1.25 0.0354 0.0492 b 0.30 0.50 0.0118 0.0197 c 0.09 0.25 0.0035 0.0098 d 2.70 3.10 0.1063 0.1220 e 1.40 1.80 0.0551 0.0709 e h 2.40 3.00 0.09449 0.11811 l q 1 0 o 10 o 0 o 10 o s 1 0.35bsc 0.0138bsc 0.95bsc 0.0374bsc 1.90 bsc 0.07480 bsc symbols millimeters inches top view side view front view l c1 s1 d e e h b a a 1 top view side view front view l c1 s1 d e e h b a a 1 sot-26 min max min max a a 1 0.00 0.15 0.0000 0.0059 b 0.30 0.55 0.0118 0.0217 d 2.70 3.10 0.1063 0.1220 e 1.40 1.80 0.0551 0.0709 e h 2.60 3.00 0.10236 0.11811 l q 1 0 o 10 o 0 o 10 o s 1 1.90 bsc 0.0748 bsc symbols millimeters inches 1.20ref 0.0472ref 0.37ref 0.0146ref 0.95ref 0.0374ref
life support policy: these products of ame, inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of ame, inc. ame, inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. ? ame, inc. , february 2006 document: 2075-ds8750-c.01 corporate headquarter u.s.a. (subsidiary) ame, inc. analog microelectronics, inc. 2f, 302 rui-guang road, nei-hu district 3100 de la cruz blvd., suite 201 taipei 114, taiwan. santa clara, ca. 95054-2046 tel: 886 2 2627-8687 tel : (408) 988-2388 fax: 886 2 2659-2989 fax: (408) 988-2489 www.ame.com.tw e-mail: sales@ame.com.tw

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